Sponge holder



FIG. 1 is a top plan view of a sponge holder showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left-side elevational view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a vertical cross-sectional perspective view thereof, taken in the direction of line 7-7 of FIG. 1; and,

FIG. 8 is a perspective view thereof. 

The ornamental design for a sponge holder, as shown and described. 